Online monitoring device of methanol fuel supply system and monitoring method thereof

The invention discloses an on-line monitoring device of a methanol fuel supply system and a monitoring method thereof.The on-line monitoring device can monitor the pressure of the methanol fuel supply system of a marine engine in real time, during specific use, methanol fuel in a material conveying pipe enters an inner through hole through a connecting pipe, and the pressure of the methanol fuel supply system is monitored; finally, the pressure sensor is in contact with the ceramic pressure sensor, so that the ceramic pressure sensor can measure the pressure value of the methanol fuel in the conveying pipe in real time and send the pressure value to the processing module; the processing module judges whether the pressure value is within the preset threshold range or not in real time, and when the pressure value is not within the preset threshold range, the processing module controls the alarm module to give an alarm, so that the purpose of monitoring the pressure of the marine engine methanol fuel supply syst